Tire casing vulcanizer



Aug. 27,1946.

HQ v. JAMES TIRE CASING VULCANIZER 2 Sheets-Sheet 2 Filed April 9, 1945 mmvrox. b24010 I. JAMLS.

A rfOIPQ/gx Patented Aug. 27, 1946 UNITED STATES PATENT OFF'I'CE v 2,406,498 v TIRE CASING VULCANIZER Harold Y.James, Denver, Cole. A Application April ll, 1945, Serial No. 587,339

This invention relates to a tire casing vulcanizer; more particularly for what is known as "spot repairs. The principa'lobject of the invention i-sto provide a sturdy device upon which the casings can be easily placed and removed without damage to the vulcanizer, and with very little efiort on the part of the operator.

Another objectof the invention is to provide easily adjustable means for supporting the casing on the curing arm at its bead portion so as to prevent stretching and distorting of the repair. 3

Still another object is to provide a, curing arm contoured so as to prevent the formation of bulges in the casing due to internal plies or patches.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efiiciency. These will become more apparent from the following description. I r

v In the following detailed description of the invention, reference is had to the accompanyin drawings which form a part hereof. Like numerals refer to like parts in" all views of the drawings and throughout the description.

In the drawings: l Fig. l is a perspective view of the improved tire casin repair device;

Fig. 2 is a plan, view thereof;

Fig. 3- is a front view;

Fig. 4 is a vertical section taken on the lin 4-4, Fig. 3;

Fig. 5 is a cross-section taken on the line 5-5, Fig. 3; and

Fig. 6 is a detai1'perspective view illustrating one type of clamping band which may be used in connection with the improved vulcanizer.

The device is supported upon a pedestal which is preferably formed of steel plate material so as to form a hollow interior in which suitable shelves (not shown) may be placed for conveniently supporting tools and other accessories. A cap plate l2 closes the top of the podestal.

Two spaced-apart supporting arms l3 are secured on top of the cap plate I2 by means of suitable attachment screws 20 and project forwardly therefrom in parallel relation.

A hollow post I is secured on top of the projecting extremity of each of the arms I3. The posts I5 support an arcuate curing arm IS. The

curing arm is formed with a base lug l4 ad-,

jacent each of its extremities, which rest upon the posts I5.

a Claims. (01. 1 8--18) The curin arm'may have any desired provision for heating. As illustrated, it is an electrically-heated arm provided with electric heating elements I! on its interior. Conductors carrying current to the heating elements f1 pass through a conduit [8 to a suitable switch box; f9.

The posts l5 are formed" with downwardly depending apron portions 23 which overlap the inside faces of the arms" 13. A vertical tenon 24 extends downwardly along each post [5 and its apron 23,. The tenons are for the purpose of guiding a horizontal pressure plate25,tthe extremities of which are notched to ride on the tenons 24. V

The pressure plate is threaded on andsupported from a central jack screw 26, terminating at it lower extremity in a hand wheel 21''. The upper extremity of the jack screw 26 is reduced in diameter and passes through the bot-'- tom 'of the curing arm l6, terminating in a suitable combination nut and washer 28. The upward thrust of the jack screw is absorbed by a bronze washer 29 positioned between two steel washers 3.9. The downward thrust is received by a steel washer 3| 0n the interior of the curing arm I6.

An adjusting screw 32 i mounted in eachof the posts l5 and extends vertically downward therein, the lower extremity being reduced in diameter to provide a bearing shoulder inv the post. A hand, knob 33 is secured on the lower .extremity of each screw 32- by means of which it may be rotated. A nut 34 is threaded ontov each of the adjusting screws- 32 within the posts 15.

I The nut is provided with two oppositely-extending studs 35 which project forwardly and rearwardly through openings in the sides on the posts l5.

An arcuate bead arm 36 is supported by the studs 35 at the front and back of the curing arm It. The bead arms have a contour to conform to the external contour of a typica1 tire casing bead portion, and are provided with No. 2,112,440. The pressure plate 25 is provided with chain notches 40 into which the links of the chains 39 are engaged.

In use, the tire casing to be repaired is hung tion. V i I Having thus described the invention, what is. laimedfanddesired secured byLetters Patent bead arms .36 against the heads of the casing so that they will support the latter uniformly throughout the length of the repaired. portion to prevent the weight of the casing from widening,

stretching, and distorting the repair. 7

The clamping band 38 is placed over the repair,

the chains39': are drawn tightly-by hand, "and links ,thereofare-engaged in the four chain notches 40 of the plate 25. The hand wheel 21 is then rotated to pull the pressure plate down on the projecting extremity of each arm; an

wardly, thus placing the chains undertension V and clamping the band 38 snuglya'gainst the repair, and the latter snugly against" the-curing arm l6.

the curing arm I6. I pleted the hand wheel 21 is rotated to raise the 1. pressure plate 25 so as to release the chains 39 to allow the links to be slipped from the notches 510 so that the clamping band 38 may be removed. 1 There is; of course, a slight lineal expansive and contractive movement of the curing arm l6 due to variations in temperature therein. This movement causes'the supporting arms I3 to move toward or away from each other, and is accomtherein, This improved curingarm, however, has

an arcuate depression 42 about its middle which accommodates the internal plies or patches and prevents them from forcing the casing contour outwardly to form a bulge. The depression 42 extends completely around the casing-engaging portions of the curing arm, as shown in Fig. 2. V

While a specific form of the improvement has been described and illustrated herein, it is. de-

sired to be understood that the. same may be. varied, within the scope of the appended claims, from the spirit of the inven-f without departing 1s: V V

1. A tire casing repair device comprising: a pedestal; a pair of'supporting arms detachably arcuate curing arm extending between the supporting members and being secured thereto adjacent each of its extremities; a jack screw rotatably suspended from the mid-portion of said curing arm between the supporting members; a pressure plate threaded on said jack screw; a clamping band extending over said curing arm; means for connecting said clamping band to said pressure plate; a vertical tenon forn'1ed fon each of said supporting members, the tenons on the opposite members facing each other; and notches in said pressure plate for engaging said tenons to prevent rotation of said pressure plate.

2. A tire casing repair device comprising: a

. pedestal; a pair of supporting arms detachably 1 a. i secured to said pedestal and extending forwardly The curing is effected as usual by the heat of When the repair; is comg therefrom; a supporting member mounted on .theprojecting extremity of each arm; an arcuate curing arm extending jbetween the supporting porting members being hollow; a vertical adlusting screw .in each of said supporting members; a nut threaded oneach adjusting screw; studs projecting forwardly and rearwardly from each nut and from said supporting members; and an arcuate bead iron extending between the studs andbeing supported thereby at each side of said curing arm.

'3. A tire casing repair device comprising: a

pedestal; a pair of supportingarms detachably secured to said pedestal and extending forwardly therefrom; a supporting member mounted on the projecting extremity of each arm; an arcuate curing arm extending between the supporting members and being secured thereto adjacent each ,of'its extremities; a vertical adjusting screw in secured to said pedestal and extending for wardly therefrom; a supporting membermountedi thereby at each-side of said curing'arm; and

means for drawing a tire casing against said curing arm.

HAROLD v. .IJAMES. 

